Low Flow Diversions

Dry-weather urban runoff from over irrigation, broken/misadjusted sprinklers, and other sources is some of the most potentially problematic water that enters storm drains, and can include motor oil, fertilizer, pet waste, and trash. A Low Flow Diversion (LFD) is a structural system that diverts this polluted water away from the ocean to be filtered and treated before being discharged into the ocean The LACFCD currently operates 21 Low Flow Diversions (LFDs) throughout Los Angeles County, with the majority located near outlets to the Santa Monica Bay. All these LFDs divert water from storm drains into the sanitary sewer or another treatment system to eliminate the discharge of potentially polluted dry-weather runoff into receiving waters. While there are many similarities between the sites, each LFD is unique in its design, equipment, and operation.

The County seeks to upgrade the existing LFDs to a more uniform and comprehensive design with increased telemetry capabilities that will enable staff to more efficiently and effectively operate, maintain, and report on each of the LFDs. To date, six sites have been completed, and 13 additional sites are expected to be completed by 2016.